Tsh low but t3/t4 Normal?

[Kittyswhiskers]

These were tested due my rapid heart rate.

My tsh was low 0.255 but has raised in a month. However my t3 and t4 are normal and have been throughout pregnancy. I’m now 27 weeks. The gp wasn’t too concerned and said he would repeat in a few weeks. Can this be something caused by pregnancy?

Yes. Pregnancy can cause your thyroid to go a bit funny. Definitely keep an eye on things in the post-natal period as well.

Thank you! I think my thyroid went a bit funny after my first baby but self resolved. It was only picked up as my hair was dropping out rapidly and my anxiety was through the roof!
This time my heart rate was what made them test - 110 all the time